Changes

To use [https://getcomposer.org/ Composer] in your PHP project, see this [http://daylerees.com/composer-primer primer], plus Matthieu Moquet's "''[https://moquet.net/blog/5-features-about-composer-php/ 5 Features About Composer]''", and also this handy-dandy [http://composer.json.jolicode.com/ cheatsheet] (with mouseovers!)